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68380361 = 710394841
BaseRepresentation
bin1000001001101…
…10011011001001
311202200002012222
410010312123021
5120001132421
610441343425
71460136440
oct404663311
9152602188
1068380361
11356651a5
121aa97b75
131122256a
14911dd57
15600acab
hex41366c9

68380361 has 8 divisors (see below), whose sum is σ = 78908544. Its totient is φ = 58042080.

The previous prime is 68380349. The next prime is 68380379. The reversal of 68380361 is 16308386.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68380361 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (68380061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46700 + ... + 48141.

It is an arithmetic number, because the mean of its divisors is an integer number (9863568).

Almost surely, 268380361 is an apocalyptic number.

It is an amenable number.

68380361 is a deficient number, since it is larger than the sum of its proper divisors (10528183).

68380361 is a wasteful number, since it uses less digits than its factorization.

68380361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94951.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 68380361 is about 8269.2418636777. The cubic root of 68380361 is about 408.9251262282.

The spelling of 68380361 in words is "sixty-eight million, three hundred eighty thousand, three hundred sixty-one".

Divisors: 1 7 103 721 94841 663887 9768623 68380361